:root {
    --bg-color: #0f0f1a;
    --card-bg: #1a1a2e;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --success: #10b981;
    --danger: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-color);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: linear-gradient(135deg, #1e1e3f 0%, #1a1a2e 100%);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.app-header nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
}

.nav-logout {
    color: var(--danger);
}

.app-content {
    flex: 1;
    padding: 30px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.app-footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    border: 1px solid var(--border-color);
}

.card h3 {
    margin-bottom: 15px;
    color: var(--text);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--accent) 0%, #4f46e5 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    box-shadow: none;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.85rem;
}

/* Template Card */
.template-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.template-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.template-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: 15px;
    }

    .app-header nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .app-content {
        padding: 20px 15px;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}